Pole-reenforcing sleeve



E. HEYDON Dec. 7,1926. I

POLE HEENFORCING SLEEVE Filed March 5. 1923 mmv'rox. 427m f dm PatentedDec. 7, 1926.

UNITED STATES 1,609,818 PATENT OFFICE.

EDWARD I-IEYDON, F INDIANAPOLIS INDIANA; EMMA HEY DON, EXECUTBIX OF ED-WARD HEYDON, DECEASED, ASSIGNOR 'IO EMMA HEYDON, OF INDIANAPOLIS, IN-

DIANA.

POLE-REENFORCING SLEEVE.

Serial No. 622,862.

It is the object of my invention to provide any of the parts had rusted.Further, it has a pole-reenforcing sleeve which can be put on and takenoff the pole wit-h relatively great ease, and without the difiiculty anda work involved with former pole-reenforcing sleeves, and which inaddition is capable of use on portions of the pole where the diameterchanges as well as on portions thereof where the diameter is uniform.

Both wooden poles and steel poles tend to become weak and to break atcertain points. In the wooden pole, this is usually on the line just ator above the ground. In the steel pole, it is on the same line, just ator above the ground; and also at every joint in the pole or just aboveit, where the lower end of a smaller tubular pole section is insertedinto the upper end of the neXt lower but slightly larger tubular polesection. To save poles which are weakened so that they are in danger ofbreaking, or which perhaps have already broken, pole sleeves have beenused to surround the pole and project lengthwise on both sides of theweakened part or break. The most effective of these have been made intwo parts, each of which extended halfway around the pole, the twolongitudinal edges of each part being provided respectively with aradially outwardly projecting tongue and a radially inwardly openinggroove; so that the two halves of the sleeve could be applied to thepole at longitudinally spaced points thereon, with the tongue and grooveof one part in line with the groove and tongue respectively of the otherpart, and the two sleeve-halves then brought together by sliding onepart relatively to the other to cause the tongues and grooves tointerfit. To take such a sleeve off, if that is required for any reason,the operation is reversed.

This has formed a very effective polesleeve construction, and has savedmany poles which would. otherwise have been total losses. However, ithas involved-some clifficulties, because the two sleeve-halves had to beslid longitudinally with respect to each other for the full length ofthe sleeve, either to put the sleeve together or takeit apart. ThislOIlg sliding movement was sometimes very difficult to obtain because ofvarious obstructions which might be encountered in the construction ofthe sleeve itself or in the pole or its surroundings, especially whenresulted in breaking of the sleeve-halves in the heavy pounding to whichthey were sometimes subjected in putting them together or taking themapart, when such a long relative movement was required. Moreover, suchsleeves were of the same size at both ends, in order that the tonguesand grooves would co-operate throughout the sleeve length, and so werenot adapted for use at pole joints.

By my present invention, I make it possible to put the two sleeve-partstogether and take them apart much more easily, and with a much shorterlongitudinal movement between the sleeve-parts, and to apply the sleeveeffectively to pole joints as well as elsewhere. t-inuous both thetongues and the groove-containing ribs with which the tongues co-operate, instead of making them continuous as heretofore, with gaps orspaces at one or more points in their length at least equal in span tothe length of the parts of the cooperating ribs or tongues; so that input ting the sleeve parts together it is necessary to displace themrelatively to each other only by the half of the distance betweencenters of adjacent parts of a tongue, instead of by the whole length ofthe sleeve, and to move them relatively only by that distance in orderto lock the two parts together or unlock them.

The accompanying drawing illustrates my invention: Fig. 1 is a verticalsectional view through a multi-section tubular steel pole equipped atvarious points with pole-reen forcing sleeves of my invention, the twolower sleeves being shown as filled with grout, while the uppermostsleeve is shown as snugly fitting the pole without grout; Fig. 2 is anenlarged perspective view of the lowermost sleeve shown in Fig. 1, withthe two sleeve-parts interlocked; Fig.- 3 is a section on the lines 33of Figs. 1 and 2, but before the grout has been put in place; Fig. 4 isan enlarged elevation of the uppermost sleeve of Fig. 1, with the twosleeve-parts" displaced sufficiently to unlock them; and Fig. 5 is aplan of the sleeve shown in Fig.

The pole shown is a multtsection steel pole, having a lower part 10 setin the ground 11 but projecting upward therefrom,

In doing this, I make nonconan intermediate part 12 the lower end ofwhich projects some distance into the upper end of the section 10, andan upper section 13, the lower end of which projects into the upper endof the section 12. This pole has several well-defined points where it ismost apt to corrode and become weakened by natural conditions, due tothe retaining of moisture in contact with the metal. These are at theground line 11 for the section 10, and at the upper ends of the sectionsand 12 for the sections 12 and 13 respectively. Therefore, it is atthese points that the pole is most apt to need reenforcing sleeves,which may be put around the pole at these points, as indicated in Fig.1.

The reen'forcing sleeve may fit the pole fairly snugly, with no materialintervening space, as the uppermost sleeve 14 as shown in Fig. 1, or maybe slightly spaced from the pole by internal lugs 15 on the sleeve, asis shown for the intermediate andlower sleeves 16 and 17 in Fig. 1, inwhich latter cases the intervening space between the sleeve and the polemay be filled with grout 18. The lowermost sleeve 17 is of the same sizeat both top and bottom, because it is not intended to extend past apoleejoint; but the two sleeves 1 and 16 are of smaller diameter at. thetop than at the bottom, becausejthey co-operate with the pole at joints,and at each joint. the pole is smaller above the joint than it is belowthe joint. This two-diameter feature is made possible by my invention.The one-diameter sleeve is shown in Figs. 2 and 3,. and. thetwo-diameter sleeve in Figs. 1 and 5; but either can be used, asconditions require. As so far described, except for the two-diameterfeature, the structure is old, and my invention is applicable to any ofthe types of sleeves shown. whether one-diameter or two-diametersleeves, and whether with or without the internal lugs 15.

Each sleeve 14, 16, or 17 is made of a plurality'ofparts' 21 and 22..Pre'lerably these parts are halves, so that two are used to form acomplete sleeve, each part extending for 180 around thepole.circumference. Each sleeve-part at one longitudinal edge has adiscontinuous tongue formed, by a plurality of spaced. tongue-sections23, equally spaced apart. Preferably there is.a tongue-section at eachend, so that there is one more tonguesection than spacer On the. otherlongitudinal edge, eachsleeve-part. has a plurality of spacedrib-sections 24, .which on their radially inner surfaces are providedwith radial inwardly facing grooves 25 of the proper sizeand shape tofit the tongue-sections 23. The rib-sections correspond. in number tothe tongue-sections, and are correspondingly spaced. Any. space betweenvadjacent tongue-sections.orrib-sections is preferably longer than atongue-section or ribsection itself. This is the preferredarrangementybutin any case, the space between adjacent rib-sections isas-long as or slightly longer than a tongue-section, and vice versa. Thetongue-sections in a sleeve-part are preferably all co-planar; so arethe groovesections.

By this construction. it is possible'to assemble'the sleeve, whether ona pole or not, by displacing ,thetwo sleeve-parts longitudinally merelyby the distance from the center of a space tothecenter otthe adjacenttonguesection or rib-section. in, other words, with the tongue-sectionsand rib-sections sii'nilarly spaced, and witha section 'ather than aspace at each end; the longitudinal displacement betweenathe twosleeveparts necessary to assemble or disassemble the sleeve is theinvert of twice the number of tongue sect-ions or rib-sections, minus.1that is, if there are four tongue-sections; the necessarydisplacement isonly one-seventl-i 0t thesleeve length. as shown in Fig. 4:, while itthere are three tongue-sections. the necessary displacement is onlyone-fifth of the sleeve-length. as shown in Fig. 2. By malaing thisdisplacement, the two sleeve-parts can beput together so that thetongue-sectionso't each sleeve-part are in alinement with the gr ooves.in. the rib-sections of the other sleeve-part, whereupon the twosleeveparts may be moved relatively longitudinal- 1y. to each other tolock. the two sleeve-parts together. This makes the longitudinal drivingof a sleeve-part necessary to lock or unlock them onlv a fraction ofwhat was forinerly required, so that the breakage is great? lyreduced,.and theliability of encountering obstructions in the movementis correspondingly reduced.

When the sleeve iszassembled over a joint, as are the sleeves 14: and16' of Fig. 1, one sleeve-part is put on the pole atthev joint. and theother sleeve-part is put on at the necessary distance above the joint sothat the rib-sections and tongue-sections, of it will interdigitate withthose of the other: and then the higher sleeve-section is drivendownward to lock the rib-sections and tongue-sections, andseat bothsleevesparts-on the upper end of the adjacentlower pole-section." Thechange in diameters where there is a twodiameter-sleeve, as for a joint,is at a space between sections-of the tongue and ribs, asis indicated inFig. 4. If; there is no joint where the sleeve is appliedthe location ofthe sleeve-parts may be somewhat more flexible, but in general-the sameprocedure isfollowed. When thetwosleeve-parts are locked together,.thegrout.18,.if it is;used, maybe poured in place.

I claim. as my invention :7-

1. A pole-reenforcing sleeve. comprising a plurality of partswhichtogether form the complete sleeve,.one edge of each sleeveparthaving a series of spaced tongue-sections and the other a series ofspaced groovesections so that the tongue-sections of one part may bereceived in the groove-sections of the other part to lock the parts ofthe sleeve together, the spaces between tonguesections beingsufficiently long to receive the groove sections and those betweengroovesections being sufficiently long to receive the tongue-sections.

2. The combination set forth in claim 1, with the addition that thesleeve at its opposite ends is of different diameters and has anintermediate diameter-offsetting portion.

3. A pole-reenforcing sleeve, comprising a plurality of parts whichtogether form a complete sleeve, said parts at their meetinglongitudinal edges being provided with in terfitting locking members forlocking the parts together, and the sleeve being of a different diameterat one end from what it is at the other.

4. A pole-reenforcing sleeve, comprising a plurality of parts whichtogether form a complete sleeve, said parts at their meetinglongitudinal edges being provided with intel-fitting locking members forlocking the parts together, the interfitting locking parts at one set ofmeeting edges between sleeveparts being formed by a plurality of spacedtongue-sections on onesleeve-part and a plurality of spacedgroove-sections on the other sleeve-part.

5. The combination set forth in claim 4, with the addition that thetongue-sections are all co-planar and the groove-sections are allco-planar, and the spaces between each set of sections are sufiicientlylong to receive the sections of the other set.

6. The combination set forth in claim 4, with the addition that the twoends of the sleeve are of different diameters, and the sleeve has anintermediate diameter-offsetting portion joining the two portions ofdifferent diameters.

7. The combination set forth in claim at, with the addition that thetongue-sections are all co-planar and the groove-sections are allco-planar, the spaces between each set of sections are sufficiently longto receive the sections of the other set, the two ends of the sleeve areof different diameters, and the sleeve has an intermediatediameter-offsetting portion joining the two portions of differentdiameters.

8. A pole-reenforcing sleeve, comprising a plurality of parts whichtogether form a complete sleeve, said parts at their meetinglongitudinal edges being provided with interfitting locking memberswhich are interengaged and disengaged by relative longitudinal movementbetween the sleeve-parts, and the sleeve being of a different diameterat one end from what it is at the other.

9. A pole-reenforcing sleeve, comprising a plurality of parts whichtogether form a complete sleeve, said parts at their meetinglongitudinal edges being provided with interfitting locking memberswhich are interengaged and disengaged by relative longitudinal movementbetween the sleeve-parts of materially less than the length of thesleeve.

10. A pole-reenforcing sleeve, comprising a plurality of parts whichtogether form a complete sleeve, said parts at their meetinglongitudinal edges being provided with interfitting locking memberswhich are interengaged and disengaged by relative longitudinal movementbetween the sleeve-parts of materially less than the length of thesleeve, and the sleeve being of a different diameter at one end fromwhat it is at the other.

In witness whereof, I have hereunto set my hand at Indianapolis,Indiana, this 1st day of March, A. D.'one thousand nine hundred andtwenty-three.

- EDIVARD HEYDON.

